Hi Jase, Ok, this is how it is.
First end of scope with coupling ring.
Dedicated Takahashi Diagonal, with 1.25 EP holder accessory.
Next 17mm x 1.25 EP
Also last view of Enad of scope with coupling, extender Q extension tube, with Extender Q 1.6x inserted as decribed in system chart, 1.25 diagonal, and 17mm 1.25 Ep.
Have to admit i have not tried that last combo yet, wait till tonight, however it is stated quite clearly that the Tak can be used for visual with the dedicated combo above, and dose not need the extender Q to work
Cheers leon